WO2013134946A1 - Procédé de sélection de porteuse opérationnelle, station de base micro et station de base macro - Google Patents

Procédé de sélection de porteuse opérationnelle, station de base micro et station de base macro Download PDF

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Publication number
WO2013134946A1
WO2013134946A1 PCT/CN2012/072424 CN2012072424W WO2013134946A1 WO 2013134946 A1 WO2013134946 A1 WO 2013134946A1 CN 2012072424 W CN2012072424 W CN 2012072424W WO 2013134946 A1 WO2013134946 A1 WO 2013134946A1
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WO
WIPO (PCT)
Prior art keywords
base station
carrier
micro base
subframe
micro
Prior art date
Application number
PCT/CN2012/072424
Other languages
English (en)
Chinese (zh)
Inventor
吴联海
李兆俊
汪巍崴
常宁娟
徐海博
Original Assignee
富士通株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 富士通株式会社 filed Critical 富士通株式会社
Priority to PCT/CN2012/072424 priority Critical patent/WO2013134946A1/fr
Priority to CN201280069036.4A priority patent/CN104094622B/zh
Publication of WO2013134946A1 publication Critical patent/WO2013134946A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the present invention relates to the field of communications, and in particular, to a method for selecting an operating carrier, a micro base station, and a macro base station.
  • Background Art In order to further improve the capacity of a system, the advanced long-term evolution scheme of the next-generation wireless communication system LTE-A introduces a Heterogeneous Network.
  • the LTE-A system may be composed of a Macro Cell, a Pico Cell, a Femto Cell, a Remote Radio Head (RRH), a Relay, and the like.
  • RRH Remote Radio Head
  • a simple heterogeneous network scenario is considered, that is, a scenario with only one pico and one macro base station.
  • a simple heterogeneous network scenario only the time domain solution is considered to solve the interference problem.
  • FIG. 1 is a schematic diagram showing interference in a heterogeneous network.
  • a typical macro cell + micro cell herein, the term "micro cell” term may include a femto cell, a pico cell, etc.
  • the user equipment receiving the micro cell service at the edge of the micro cell is interfered by the downlink signal from the macro cell.
  • the user equipment of the macro cell is also received from the micro device. The interference of the uplink signal of the user equipment of the area.
  • the embodiments of the present invention provide a method for selecting an operation carrier, a micro base station, and a macro base station.
  • the purpose is to avoid interference between multiple micro cells in a scenario where a micro cell is deployed at a high density.
  • a method for selecting an operation carrier includes:
  • the micro base station receives information of the neighboring cell including an almost empty subframe configuration
  • a method for selecting an operation carrier includes:
  • the macro base station receives information of the neighboring cell including the operation carrier
  • the macro base station configures the micro base station with an almost null subframe mode on the other operational carriers.
  • a method for selecting an operation carrier includes:
  • the operation and maintenance network element sends, to the micro base station, information indicating that there is strong interference between the micro base station and the neighboring cell;
  • the operation and maintenance network element transmits information indicating strong interference between the micro cells in the coverage of the macro base station to the macro base station.
  • a micro base station where the micro base station includes:
  • An information receiving unit which receives information of a neighboring cell that includes an almost empty subframe configuration;
  • the carrier determining unit determines whether it is possible to avoid selecting the same operating carrier as the neighboring cell that interferes with each other;
  • the carrier operation unit does not use the operation carrier when the judgment result of the carrier determination unit is that the selection of the operation carrier can be avoided.
  • a macro base station includes:
  • An information receiving unit which receives information of an adjacent cell including an operation carrier
  • a carrier determining unit determining whether the micro base station has another operating carrier
  • a subframe configuration unit configured to configure an almost null subframe mode for the micro base station on the other operation carrier when the micro base station has another operation carrier.
  • an operation and maintenance network element is provided, where the operation and maintenance network element includes:
  • the first sending unit sends, to the micro base station, information indicating that there is strong interference between the micro base station and the neighboring cell;
  • the second sending unit sends, to the macro base station, information indicating that there is strong interference between the micro cells in the coverage of the macro base station.
  • a computer readable program wherein when the program is executed in a base station, the program causes a computer to perform a selection method of an operation carrier as described above in the base station.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a selection method of an operation carrier as described above in a base station.
  • the beneficial effects of the embodiments of the present invention are that, by using the micro base station to determine whether it is possible to avoid selecting the same operational carrier as the neighboring cells that interfere with each other, interference between the plurality of micro cells can be avoided in a scene where the micro cells are deployed in a high density.
  • Figure 1 is a schematic diagram showing interference in a heterogeneous network
  • FIG. 2 is a schematic diagram of deploying multiple micro cells in a macro cell
  • Embodiment 3 is a flow chart of a selection method of Embodiment 1 of the present invention.
  • FIG. 5 is still another flowchart of the selection method of Embodiment 1 of the present invention.
  • FIG. 6 is a schematic structural diagram of a micro base station according to Embodiment 1 of the present invention.
  • Figure 7 is a block diagram showing still another configuration of a micro base station according to Embodiment 1 of the present invention.
  • Figure 8 is a flowchart of a selection method of Embodiment 2 of the present invention.
  • FIG. 9 is still another flowchart of the selection method of Embodiment 2 of the present invention.
  • Figure 10 is still another flowchart of the selection method of Embodiment 2 of the present invention.
  • Figure 11 is a block diagram showing the structure of a macro base station according to Embodiment 2 of the present invention.
  • Figure 12 is a block diagram showing the structure of a macro base station according to Embodiment 2 of the present invention.
  • Figure 13 is a flowchart of a selection method of Embodiment 3 of the present invention.
  • FIG. 14 is a schematic structural diagram of an operation and maintenance network element according to Embodiment 3 of the present invention. detailed description
  • FIG. 2 is a schematic diagram of deploying multiple micro cells in a macro cell. As shown in Figure 2, there are six microcells from Picol to Pico6 within the coverage of the macrocell. Among them, if picol and pico2 use the same almost blank subframe (ABS, almost blank subframe), strong interference will occur in the overlapping area.
  • ABS almost blank subframe
  • ABS mode 1 and ABS mode 2 are respectively configured for picol and pico2, the intersection of the two ABS modes will not be used. Therefore, in this scenario, pico should avoid mutual interference using the same ABS mode.
  • pico and macro base stations should reconfigure the neighbor cell measurement set to the UE.
  • the embodiment of the invention provides a method for selecting an operation carrier, which is applied to a micro base station side.
  • 3 is a flowchart of a selection method according to an embodiment of the present invention. As shown in FIG. 3, the selection method includes: Step 301: A micro base station receives information of a neighboring cell that includes an almost null subframe configuration. Step 302: Determining, by the base station, whether to select the same operational carrier as the neighboring cell that interferes with each other;
  • Step 303 If the result of the determination is that the operation carrier can be avoided, the micro base station does not use the operation carrier.
  • the operation and maintenance network element may send information indicating that there is strong interference between the micro base station and the neighboring cell to the micro cell, and notify the neighboring cell in the micro cell which has strong interference;
  • the OAM can also be configured with an operating carrier for the base station.
  • the micro base station can receive information of the neighboring cell through the X2 interface, where the information includes at least configuration information of the ABS of the neighboring cell.
  • the ABS configuration information can pass through the following two cells of the X2 interface (IE, Obtained in information element ): ABS information IE and ABS status IE. Indicate the ABS configuration information through the ABS information IE, or indicate through the ABS status IE
  • the ABS information IE may be added with a 1-bit indicator to indicate whether the ABS information IE is used to configure the ABS resource, or to inform the neighboring base station of the ABS information that is being used by the neighboring base station; and the measurement subset may be added to the ABS status IE. IE. After the micro base station learns the ABS status IE from the neighboring cell, it can know the ABS information of the neighboring cell, and can configure the measurement set for the terminal according to the measurement subset IE.
  • the micro base station may not use the operational carrier after determining that it is possible to avoid selecting the same operational carrier as the neighboring cell that interferes with each other. Therefore, no interference occurs between the micro base station and neighboring cells that interfere with each other on the operation carrier, and strong interference between the micro cells can be avoided.
  • FIG. 4 is still another flowchart of the selection method according to the embodiment of the present invention. As shown in FIG. 4, the selection method includes:
  • Step 401 The micro base station receives information of a neighboring cell that includes an almost null subframe configuration.
  • Step 402 The micro base station determines whether it is possible to avoid selecting the same operational carrier as the neighboring cell that interferes with each other. When the determination result is yes, step 403 is performed, and when the determination result is no, step 404 is performed.
  • Step 403 The micro base station does not use the operation carrier.
  • Step 404 The micro base station determines whether it is possible to avoid applying an almost empty subframe on the operation carrier. When the determination result is yes, step 405 is performed, and when the determination result is no, step 406 is performed.
  • Step 405 The micro base station applies for almost blank subframes on other operating carriers.
  • Step 406 The micro base station applies, on the operation carrier, a nearly blank subframe mode different from the neighboring cells that interfere with each other.
  • the micro base station configures the neighboring cell that interferes with each other on the operation carrier for the associated user equipment. Measurement set.
  • FIG. 5 is still another flowchart of a selection method according to an embodiment of the present invention. As shown in FIG. 5, the selection method includes: Step 501, Pico2 is started;
  • Step 502 The operation and maintenance network element is configured.
  • Step 503 Pico2 receives information through the X2 interface
  • Step 504 Pico2 determines whether to avoid selection / 1; when it can be avoided, step 505, when it can not be avoided, step 506;
  • Step 505 Pico2 is not used
  • Step 506 Pico2 determines whether it is possible to avoid applying the almost empty subframe mode on/on; when the determination result is yes, step 507 is performed, and when the determination result is no, step 508 is performed;
  • Step 507 Pico2 applies for almost blank subframe mode on other operating carriers (for example, / 2 );
  • Step 508 Pico2 applies for other almost empty sub-frame mode on _! (for example, ABS mode)
  • Step 509 Pico2 configures a measurement subset on Picol for the user equipment to which it belongs.
  • FIG. 6 is a schematic diagram of a configuration of a micro base station according to an embodiment of the present invention.
  • the micro base station 600 includes: an information receiving unit 601, a carrier determining unit 602, and a carrier operating unit 603; Refer to the prior art, and details are not described herein again.
  • the information receiving unit 601 receives the information of the neighboring cell including the configuration of the almost empty subframe; the carrier determining unit 602 determines whether it is possible to avoid selecting the same operating carrier as the neighboring cell that interferes with each other; the carrier operating unit 603 is in the carrier determining unit 602. The result of the judgment is that the operation carrier is not used when the operation carrier can be avoided.
  • FIG. 7 is still another schematic diagram of a configuration of a micro base station according to an embodiment of the present invention.
  • the micro base station 700 includes: an information receiving unit 701, a carrier determining unit 702, and a carrier operating unit 703.
  • the micro base station 700 may further include: a subframe determining unit 704 and a subframe applying unit 705; wherein the subframe determining unit 704 determines when the determining result of the carrier determining unit 702 is that the operating carrier cannot be avoided. Is it possible to avoid applying on the operating carrier? The almost blank subframe; the subframe requesting unit 705, when the judgment result of the subframe judging unit 704 is that it is possible to avoid applying for an almost null subframe on the operation carrier, applies an almost null subframe on another operation carrier.
  • subframe application unit 705 may be further configured to: when the determination result of the subframe determination unit 704 is that the application of the almost empty subframe on the operation carrier cannot be avoided, apply on the operation carrier to be different from the adjacent cell that interferes with each other. Almost empty sub-frame mode.
  • the micro base station 700 may further include: a measurement set configuration unit 706 configured to configure, by the associated user equipment, a measurement set of the neighboring cells that interfere with each other on the operational carrier.
  • a measurement set configuration unit 706 configured to configure, by the associated user equipment, a measurement set of the neighboring cells that interfere with each other on the operational carrier.
  • the micro base station can determine whether it is possible to avoid selecting the same operational carrier as the neighboring cells that interfere with each other, and avoid interference between multiple micro cells in a scenario where the micro cell is deployed at a high density.
  • FIG. 8 is a flowchart of a selection method according to an embodiment of the present invention. As shown in FIG. 8, the selection method includes:
  • Step 801 A macro base station receives, by a neighboring cell, information including an operation carrier.
  • Step 802 The macro base station receives an almost null subframe request sent by the micro base station, where the almost empty subframe is applied on the same operational carrier as the neighboring cell that interferes with the micro base station;
  • Step 803 The macro base station determines whether the micro base station has other operating carriers.
  • Step 804 If the micro base station has other operational carriers, the macro base station configures the micro base station with an almost null subframe mode on other operational carriers.
  • the operation and maintenance network element OAM may send information indicating that there is strong interference between the micro cells in the coverage of the macro base station to the macro base station, and may notify the macro base station: which micro cells are in the coverage area interference.
  • the macro base station may further receive information of a neighboring cell through an X2 interface, where the information includes carrier selection information and the like.
  • FIG. 9 is still another flowchart of a selection method according to an embodiment of the present invention. As shown in FIG. 9, the selection method includes:
  • Step 901 The macro base station receives, by the neighboring cell, information including an operation carrier.
  • Step 902 The macro base station receives an almost null subframe request sent by the micro base station, where the almost empty subframe is applied to the same operational carrier of the neighboring cell that interferes with the micro base station;
  • Step 903 the macro base station determines whether the micro base station has other operating carriers; if the micro base station has other operating carriers, step 904 is performed; if the micro base station has no other operating carriers, step 905 is performed;
  • Step 904 The macro base station configures the micro base station with an almost null subframe mode on the other operating carrier.
  • Step 905 The macro base station configures, on the operational carrier, an almost null subframe mode different from the mutually interfered neighboring cells for the micro base station.
  • the selecting method may further include: the macro base station configuring a neighbor cell measurement set for the user equipment to which it belongs. For example, for a certain operating carrier, if the macro base station has configured an ABS mode on the operational carrier, the macro base station will configure a neighboring cell measurement set for the associated UE; if the macro base station has configured two on the operational carrier For different ABS modes, the macro base station will configure two neighbor cell measurement sets for the UE to which it belongs.
  • FIG. 10 is still another flowchart of a selection method according to an embodiment of the present invention. As shown in FIG. 10, the selection method includes:
  • Step 1001 the base station starts
  • Step 1002 The operation and maintenance network element is configured.
  • Step 1003 The macro base station receives information through the X2 interface.
  • Step 1004 The macro base station receives an almost null subframe request of Pico2 on f.
  • Step 1005 the macro base station determines whether the Pico2 has an operation carrier different from _/! (for example, / 2 ); if yes, executing step 1006, if not, executing step 1007;
  • Step 1006 The macro base station configures an almost empty subframe mode for the Pico2 on the different operating carrier/ 2 ;
  • Step 1007 The macro base station configures another almost empty subframe mode for the Pico2 (for example) Such as ABS mode 2);
  • Step 1008 The macro base station configures a neighbor cell measurement set for the user equipment to which it belongs.
  • the embodiment of the present invention further provides a macro base station, and the same content as the above method is not described again.
  • 11 is a schematic diagram of a configuration of a macro base station according to an embodiment of the present invention.
  • the macro base station 1100 includes: an information receiving unit 1101, an application receiving unit 1102, a carrier determining unit 1103, and a subframe configuration unit 1104.
  • the 1100 reference may be made to the prior art, and details are not described herein again.
  • the information receiving unit 1101 receives the information including the operation carrier of the neighboring cell; the application receiving unit 1102 receives the almost empty subframe request sent by the micro base station, and the almost empty subframe applies for the same operation in the neighboring cell that interferes with the micro base station.
  • the carrier determining unit 1103 determines whether the micro base station has another operating carrier; the subframe configuration unit 1104 configures the micro base station with an almost empty subframe mode on the other operating carrier when the micro base station has other operating carriers. .
  • FIG. 12 is a schematic diagram of a configuration of a macro base station according to an embodiment of the present invention.
  • the macro base station 1200 includes: an information receiving unit 1201, an application receiving unit 1202, a carrier determining unit 1203, and a subframe configuration unit 1204.
  • subframe configuration unit 1204 is further configured to: when the micro base station has no other operation carrier, configure, on the operation carrier, an almost null subframe mode different from the mutually interfered neighboring cells on the operation carrier.
  • the macro base station 1200 may further include: a measurement set configuration unit 1205, and the measurement set configuration unit 1205 configures a neighbor cell measurement set for the associated user equipment.
  • the macro base station configures the almost empty subframe mode on the other operating carriers; after determining that the micro base station has no other operational carriers, the carrier is operating. A different almost empty subframe mode is configured for the micro base station. Interference between multiple microcells can be avoided in a scenario where microcells are deployed at high density.
  • FIG. 13 is a flowchart of a selection method according to an embodiment of the present invention. As shown in FIG. 13, the selection method includes: Step 1301: The operation and maintenance network element sends, to the micro base station, information indicating that there is strong interference between the micro base station and the neighboring cell.
  • Step 1302 The operation and maintenance network element sends, to the macro base station, information indicating that there is strong interference between the micro cells in the coverage of the macro base station.
  • the OAM can not only configure the operating carrier for the base station, but also notify the micro base station: which neighboring cells have strong interference with the micro base station; and can notify the macro base station: the micro cell within the coverage of the macro base station Which microcells interfere with each other.
  • FIG. 14 is a schematic structural diagram of an operation and maintenance network element according to an embodiment of the present invention.
  • the operation and maintenance network element 1400 includes: a first sending unit 1401 and a second sending unit 1402; For part, reference may be made to the prior art, and details are not described herein again.
  • the first sending unit 1401 sends, to the micro base station, information indicating that there is strong interference between the micro base station and the neighboring cell; the second sending unit 1402 sends a strong indication to the macro base station that the micro area within the coverage of the macro base station is strong. Interference information.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a base station, the program causes a computer to perform a selection method of an operation carrier as described above in the base station.
  • Embodiments of the present invention also provide a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a selection method of an operation carrier as described above in a base station.
  • the above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or a step.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.
  • One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more combinations of energy blocks can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with DSP communications, or any other This configuration.

Abstract

Dans ses modes de réalisation, la présente invention se rapporte : à un procédé de sélection de porteuse opérationnelle, à une station de base micro et à une station de base macro. Le procédé de sélection selon l'invention comprend les étapes suivantes : une station de base micro reçoit des informations comprenant une configuration de sous-trame pratiquement vide, d'une cellule voisine ; la station de base micro détermine si une sélection d'une porteuse opérationnelle, qui est identique à celle de la cellule voisine qui subit et provoque un brouillage réciproque, peut être évitée, ou non ; et, si le résultat d'une détermination indique que la sélection de la porteuse opérationnelle peut être évitée, la station de base micro n'utilise pas la porteuse opérationnelle. Par la mise en œuvre des modes de réalisation de la présente invention, des interférences entre une pluralité de micro cellules peuvent être évitées, dans un scénario de forte densité de déploiement de micro cellules.
PCT/CN2012/072424 2012-03-16 2012-03-16 Procédé de sélection de porteuse opérationnelle, station de base micro et station de base macro WO2013134946A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2012/072424 WO2013134946A1 (fr) 2012-03-16 2012-03-16 Procédé de sélection de porteuse opérationnelle, station de base micro et station de base macro
CN201280069036.4A CN104094622B (zh) 2012-03-16 2012-03-16 操作载波的选择方法、微基站及宏基站

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2012/072424 WO2013134946A1 (fr) 2012-03-16 2012-03-16 Procédé de sélection de porteuse opérationnelle, station de base micro et station de base macro

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CN101860869A (zh) * 2009-04-09 2010-10-13 中兴通讯股份有限公司 小区之间干扰协调指示信息的发送方法和系统
WO2011021388A1 (fr) * 2009-08-19 2011-02-24 パナソニック株式会社 Système de communication mobile, appareil de gestion de réseau, appareil de station de base macrocellulaire et procédé de contrôle d'interférences
CN102149100A (zh) * 2011-04-25 2011-08-10 东南大学 移动通信系统分层异构网络中的强化干扰协调方法

Family Cites Families (1)

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Publication number Priority date Publication date Assignee Title
EP2544479A1 (fr) * 2010-03-04 2013-01-09 Panasonic Corporation Petit appareil station de base et procédé d'attribution de sous-bandes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101860869A (zh) * 2009-04-09 2010-10-13 中兴通讯股份有限公司 小区之间干扰协调指示信息的发送方法和系统
WO2011021388A1 (fr) * 2009-08-19 2011-02-24 パナソニック株式会社 Système de communication mobile, appareil de gestion de réseau, appareil de station de base macrocellulaire et procédé de contrôle d'interférences
CN102149100A (zh) * 2011-04-25 2011-08-10 东南大学 移动通信系统分层异构网络中的强化干扰协调方法

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CN104094622A (zh) 2014-10-08

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